Strengthening of AISI 2205 duplex stainless steel by strain ageing |
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| Affiliation: | 1. Department of Materials and Metallurgical Engineering, Gedik University, ?stanbul, Turkey;2. Department of Manufacturing Engineering, Karabuk University, Karabuk, Turkey;3. Department of Welding Technology, Kocaeli University, Kocaeli, Turkey;1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;2. Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;3. School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China;4. Technology Center of Taiyuan Iron and Steel (Group) Co., Ltd., Taiyuan 030003, Shanxi, China;1. Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200072, China;2. Baoshan Iron & Steel Co., Ltd., Shanghai 200431, China;3. Shanghai University Xinghua Institute of Special Stainless Steels, Jiangsu 225721, China;1. Dept. of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm, SE-100 44, Sweden;2. Swerim AB, Kista, Stockholm, SE-164 07, Sweden;3. ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, United Kingdom;1. Institute of Materials, Key Laboratory for Microstructures, Shanghai University, Shanghai 200072, China;2. Shanghai University Xinghua Institute of Special Stainless Steels, Jiangsu 225721, China |
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| Abstract: | In this study, static strain ageing behavior of commercially available and solution heat treated duplex stainless steel was investigated and the effect of static strain ageing on the mechanical properties was also determined in detail. Some of as-received duplex stainless steel test specimens were pre-strained in tension by 5% and then aged at 100 °C, 200 °C, 300 °C, 400 °C, 500 °C and 600 °C for 30 min in furnace. Some of duplex stainless steel test specimens were solution heat treated at 1050 °C for 30 min, water quenched and then pre-strained for 5% in tension shortly after the solution heat treatment.In order to identify the effect of static strain ageing on the mechanical properties, the tensile strength, the change in the strength due to ageing (ΔY), elongation fracture and hardness were determined. The test results showed that the mechanical properties were affected by static strain ageing mechanism which was applied at different temperatures for same time interval. |
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| Keywords: | Static strain ageing Duplex stainless steel Tensile strength Strength due to ageing Elongation fracture |
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